The Soviet Estimate: US Analysis of the Soviet Union, 1947-1991 is a themed microfilm collection which presents an integrated record of US intelligence estimates and studies relating to Soviet strategic projections, military capabilities, science and technology, economics and internal politics, 1946-1991. The estimates and studies were produced either collectively as national intelligence products or by individual agencies, and include contributions from the US Central Intelligence Agency (CIA); the Director of Central Intelligence; the US Defense Intelligence Agency; and, the US State Department. The collection includes CIA and British Secret Intelligence Service debriefing transcripts of former Soviet Gavnoye Razvedyvatelnoye Upravleniye (GRU), Chief Intelligence Directorate, Soviet General Staff, operative Oleg V Penkovskii, relating to Soviet military organisation and plans for nuclear war, Soviet nuclear targets and deployments in Europe, missile technology and launch sites, Soviet military personnel, the capture of Capt Francis Gary Powers, US Air Force U-2 High Altitude Reconnaissance Aircraft pilot, 1 May 1960, profiles of Soviet military officers, locations of Soviet nuclear weapons tests, Soviet intelligence organisations and Soviet chemical and biological weapons programs, Soviet development and deployment of Inter-Continental Ballistic Missiles (ICBMs), positions of Soviet divisions in East Germany, and the Berlin Crisis (1958- 1962), 20 Apr-14 Oct 1961; yearly US estimates of Soviet strategic capabilities, 1947- 1983, including the 'missile gap' National Intelligence Estimates, 1957-1961; detailed estimates of the Soviet space program, including National Intelligence Estimates (NIEs) relating to lunar exploration, manned space flight, reconnaissance satellites, space exploration, space weapons and weapons development, 1962-1967; US Air Force report entitled 'A History of Strategic Arms Competition: Volume 3, A Handbook of Selected Soviet Weapons and Space Systems', including data relating to Soviet air to surface missiles (AS), Tupolev bomber aircraft, M-4 / Mya-4 / 2M Myasishchev ('Bison') aircraft, space weapons, communication satellites, electronic intelligence capabilities, surface to surface (SS) theatre missiles and ICBMs, Intermediate Range Ballistic Missiles (IRBMs), Submarine-Launched Ballistic Missiles (SLBMs), Jun 1976; US intelligence community experiment in competitive analysis conducted by the CIA 'B Team' relating to US misperceptions of Soviet strategic objectives and offensive and defensive forces, Dec 1976; report from the US Department of State entitled 'History of the Strategic Arms Competition 1945-1972, parts 1 and 2', including detailed surveys and analyses of Soviet and US decision making on nuclear forces, force deployments, and nuclear strategies, Mar 1981; Special National Intelligence Estimate relating to Soviet support for international terrorism and revolutionary activities, including mention of arms transfers, military training, political violence, and terrorist activities in Africa, Asia, Europe, Latin America and the Middle East, May 1981; reports from the CIA concerning Soviet perspectives on research and development in energy-directed weapons and involvement in space weapons and Strategic Defense Initiative (SDI) research, 1985; National Intelligence Estimates relating to General Secretary of the Soviet Communist Party Mikhail Sergeyevich Gorbachev's prospects for reforming the Soviet economic and political system, including mention of his economic agenda and its implications for the Soviet military program, the dynamics of Soviet civil-military relations, the impact of reforms on labour production, health, standards of living and technological development, and the rise of civil unrest and nationalism in the Soviet Union, 1985- 1989; CIA report concerning the probabilities of a coup d'etat in the Soviet Union and the growing influence of Chairman of the Russian Republic Supreme Soviet, Boris Nikolayevich Yeltsin, May 1991.

Records of the Annual General Meetings of the Geological Society of London, 1809-current, comprising:

Rough manuscript minutes of the AGMs of the Geological Society of London, 1840-1891; Fair copies of the minutes of the AGMs of the Geological Society of London, 1844-current [incomplete]; Papers presented at AGMs, including President's agenda, ballot papers, scrutineer reports listing newly elected Council members, Officers and Fellows of the Society [pdf format after 2009], 1941-current; Printed ballot papers to elect Officers and members of Council, 1919, 1963-1996; Tickets, menus, programmes relating to the Anniversary Dinner, later President's Evening, 1853-1998; Printed notices and other ephemera regarding Annual General Meetings, 1809-1902.

Records of the Council of the Geological Society of London, 1810-current, comprising:

Minutes of the meetings of Council, 1810-current; Rough manuscript minutes of the meetings of Council, 1838-1905; Agendas for the meetings of Council, 1843-1979; Alphabetical subject indices to the minutes of the meetings of Council of the Geological Society of London, 1810-1981; Volumes containing of signatures of Council members attending Council meetings, 1882-2003; Annual reports, 1810-2010; Resolutions of Council, 1868-1931; Register of the letters presented at Council meetings, 1901-1912; Correspondence and papers relating to the meetings of Council, 1918-current.

Agenda, minutes and papers of the working party, submissions and a final report and policy document on the future of the RCOG, 1989-1992.